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Class Information
Number: 434/355
Name: Education and demonstration > Question or problem eliciting response > Grading of response form > Comparison of response form with standard answer form > Light detector sensing response
Description: Subject matter wherein the examinee"s response is detected by light sensitive means (e.g., a photocell, etc.)

Patents under this class:

Patent Number Title Of Patent Date Issued
8649728 Finger sensing apparatus and method Feb. 11, 2014
8335709 Customer survey device with fraud prevention system Dec. 18, 2012
6879805 Test form having a removable opaque layer, and method and apparatus for printing on the form Apr. 12, 2005
6684052 Scanning system for imaging and storing the images of test answer sheets having open-ended questions Jan. 27, 2004
6366760 Method for imaging test answer sheets having open-ended questions Apr. 2, 2002
6173154 System and method for imaging test answer sheets having open-ended questions Jan. 9, 2001
6112050 Scanning and scoring grading machine Aug. 29, 2000
6079624 Data processing form using a scanning apparatus Jun. 27, 2000
5902116 Electronic learning apparatus with self-adjusting level of difficulty May. 11, 1999
5681170 Electronic learning apparatus with self-adjusting level of difficulty Oct. 28, 1997
5085587 Scannable form and system Feb. 4, 1992
5046005 Test scoring machine Sep. 3, 1991

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